User talk:2600:1700:CB41:63D0:F864:4BBE:F0DB:CCDC

Recent edit to Donald P. Wagner
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Donald P. Wagner, but you didn't provide a reliable source. It's been removed for now, but if you'd like to include a citation and re-add it, please do so! If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you! Materialscientist (talk) 10:01, 28 December 2018 (UTC)